John h



April 1 1924. I 1,488,534

A. E- FOLSOM ET 'AL mcp-INE FOR SHAPING WOODEN HEELS Filed July 22 1 .4M 1 w v April 1 1924. 1,488,534

' A. E. FOLSOM ET AL MACHINE FOR SHAPING WOODEN HEELS Filed July 22 19205 Sheets-Sheet 2 April 1 1924. 1,438,534

A. E. FOLSOM ET AL MACHINE FOR SHAPING WOODEN HEELS iled July 22 1920' 5Sheets-Sheet 5 April 1 1924.

A E FOLSOM ET AL MACHTNE FOR SHAPING WOODEN HEELS Filed July 22 [192 0 5Sheets-Sheet 4 [avg/tam m April 1 1924.

A. E. FOLSOM ET AL MACHiNE FOR SHAPING WOODEN HEELS 5 Sheets$heet 5Filed July 22 1920 Patented Apr. 2., 1924.,

illllTED STATES PATENT OFFICE.

UR E. IL GLSOLM, "WENCHENDON, EVLASSACHUFJE S, Zi'C HIl H. VINTON, FKEENE, HAIJLPST' Neil's, LED W' 1"". WMLTNIFY, 013 VTINCZ-IiuNDGN,MASSACHUSETTS,

E IG-IH'UES, BY 1 ENE flSSIGIRUl/ZEN llg, "30 U: $351931 'tCI-IINEBYCORPORA- IGIL, 9F PATEESUIE, llEill A CGEtPURiiC-JEUN OF NEX -T JERSEY.

MACHINE FQlFt HEELS.

Application. filed July 22, W20. Serial No. 398,183.

To all w from it may concern Be it known that we, ARTHUR Folsom, acitizen of the United States, resid' it inchendon, in the county of llorcester and tate Ol' idassachusetts, doiin VINroN, citizen of theUnited titates, residing lieene, in the county of Cheshire and State ofNew liainpshire, and 1 V ILLIAM M. VJHIT- 7 Her, a citizen of the UnitedStates, residing 10 at 'i inchendon, in the county of ll orcester andState of l /lassachusetts, have invented new useful Improvements inMachines for Shaping i VOOdED Heels, of which the following is aspecification.

This invention relates to machine for shaping wooden heels, the objectof the invention being to provide a practical machine which willaccurately and smoothly shape a heel from a bloclr of wood and which isso constructed that heels of different shapes and sizes may be shapedupon the same ma chine.

l-ieretofore machines for cutting wooden heels have always developedobjectionable vibration of the trimming cutters. In the use of suchmachines under the present practice, a wooden h el blank is held in jackmoved by the operator against a guide, and is operated upon by theperiphery of ro tary cutter, so that even slight cutter vibrationprom'ces an irregular surface on the heel. v etoiore such machines havebeen driven from factory shat 'ng by belt gearing which necessar ts aside pull on the cutter shafts tending to induce irregular cutteraction. lltloreover, belt bearing is characteristically liable todevelop uneven or whipping action due to irregulariti s produced by thebelt lacing or otherwise, or beuse a belt other eason unbalanced. Then,0, in riew 01 eavy duty iu1posed,such -.chine requires that the beltingbe unusu- .:lly tight to niain t" traction, and this results in rapidwear of t e our shalt and its bearin s, with the necessity oi l requerenewal of the shaftbushings. re son of th further tact such trimin nucutters commonly run at very high such as 5000-500G revolutions pernute, the above referred to and other simi lar conditions very muchaggravated,

5 wi h S o pulley is out of true, wabbles, or.

with the result that for one reason or another it is difiicult and oftenpractically impossible to maintain the cutters free from harmfulvibration and to produce satisfactory heel cutting even with the mostpainstaking skillful work on the part of an operator.

High as is the speed indicated, it has been found that a substantialincrease in it would greatly improrethe quality of work produced it itcould be obtained without further aggravating the conditions abovenoted. 'ihe beginning of the cut at the breast of a wooden heel issomewhat against the grain of the wood, and the heel is often injured byforcing it too rapidly into the cutter at this point. l fe have foundthat a cutter speed of 760% it. M. or thereabouts permits as rapid afeed as any operator can be expected to produce, without tearing outsplinters near the breast. This speed, however, has not provedpractically feasible for a belt driven cutter.

improper heel cutting results either in making the product unsalable, orrequires expensive hand finishing to repair the damage as well aspossible.

In view of the foregoing, it is an object of the present invention toprovide a heel cutting machine, the operating mechanism. of which is soorganized that it may be depended upon to operate practically withoutvibration, and which will be free from belt troubles and excessive wearand tear resultins; therefrom, and economical and reliable to maintainand operate in this and other respects.

In the attainment of this object, the present invention provides a novelor anization comprising, as herein illustrated, a rotating cutter havingits periphery formed to trim the es oi wooden heel blanks, which cut teris carried on a shaft driven by a high speed motor having its rotormounted di rectly on the shaft concentrically therewith. in thisconstruction, he cutter shaft constitutes the rotor shaft of the motor,and it is not only practicable to balance the moving parts of themachine with e are accuracy, but in the operation of the machine thereis no force other than the pressure of the Work against the cuttertending to throw the rotating parts of the machine out of balance.Consequently, not only is undesirable cutter shaft vibration minimized,but t 1e wear on the bearings and shafts is so slight as to benegligible even over a long period, and at the same time, a speed of7000 ll. P. M. or even higher can be readily maintained.

The novel block holder we have shown in this application is in itself aninvention of John H. Vinton, one of the applicants in this case, forwhich he has applied for United States Letters Patent on Block holderfor heel turning machines, filed March 27, 1920, Serial No. 369337, outthis invention is not restricted to any particular form of block holderas the invention broadly resideszin a novel organization coinprising thecombination of an electric motor including a spindle, cutter fast tosaid spindle and a holder for a wooden heel his I; which is adapted tobe moved relatively to said cutter in order that it may be shaped toform a wooden heel. In the machine disclosed two cutter spindles areemployed rotating in opposite directions, one of said spindles, whenlooking down upon the same, being rotated in a clockwise direction andthe other in a counterclockwise direction.

The invention further consists in certain detailed constructions andcombination of parts all as hereinafter fully set forth in thespecification and particularly pointed out in the claims.

Referring to the drawings Figure 1 is a front elevation of our improvedmachine for shaping wooden heels.

Fig. 2 is a side elevation of the same viewed from the left of Figure 1.

Fig. 3 is a sectional elevation taken on the line 33, Figure 1.

Fig. 4 is a plan view of the machine.

Figs. 5 to 10 inclusive are diagrammatic plan views illustrating thedill'erent positions which are assumed by the block holder and itsformer relatively to the rotary cutters.

Like numerals refer to like parts throughout the several views of thedrawings.

In the drawings, 15 is the frame of the machine. 16 is one of the motorsand 1? the block holder. The motor 16 consists of the usual stator 18and rotor 19, which is fastened to a vertical spindle 20 to the upperend of which is clamped apair of cutters 21 by means of collars E22 and23 and a nut 94, which has screw-threaded engagement with the upper endof the spindle 20. The spindle 20 has two conical portions 25 and 26which are rotatably mounted in bearings 27 and 28 respectively. Thesebearings are slidably mounted upon the frame 15 and are clamped inposition on said frame by bolts 29 and 30. The bearings 27 and 28 areconnected together by a vertical shaft 31 which is fastened at its upperend by a set screw 32 to a depending bracltet 33 on the bearing 27 andis fastened at its lower end by a set screw 34.- to an upwardlyprojecting bracket 35 on the bearing 28.

The motor is provided with a casing which encloses the stator and rotorand a portion of the spindle and this casing consists of an upper capand a lower cap 37 which are both fastened to a supporting member 38which projects rearwardly from the motor and has an ear 39 thereon whichis fastened by set screws ll) and ll to the stationary verticul shaft31.

it will thus be seen that the upper bearing 2?, the lower bearing andthe motor 16 are all co ted together by the vertical shaft and .ncseparts may be adjusted vertically and slim taneously by means of a screwl2 which against the under side of the bearii'ig see Figs. 1 and 5, andhas screw-threaded engagement with a portion of the frame. The lowerhearing is-providcd with a bushing which may be adjusted vertically inthe sealing by means of collars ed and ll), bushing is provided with anoil chamber do and has ate-shed to its lower end by screw-threadedengagement therewith a pedestal l? which is locked in position upon thebushing ll) by a set collar ill. The lower end the shaft rests upon aseat d9 which is loosely mounted upon the cap ll". The upper bearing 2?is also provided with oil chambers 50, it being very es sential that thebearings of the spindle should be thoroughly lubricated in view of thehigh speed rotation the same.

The machine of our invention is provided with two motors 16 and Si withtwo motor spindles 2G and resp ctively, the dill'erent bearings and thecon ction throughout of those motors, their spindles and co-opcratingparts being substantially the same, the spindle 52 having a pair ofcutters 53 fastened thereto corresponding to the cutters 21 on thespindle 20 with this exception that the spindle 20, looking down uponthe same, rotates in a co unterclockwisc direction, while the spindle 52rotates in a clockwise direction.

The reason for this being that the cutters on the spindle 20 shape oneside of the heel and the cutters on the spindle shape the other side ofthe heel, it being necessary that the cutters should cut with the grainupon the opposite sides of the heel and this necessitates rotating thecutter spindles in oppo site directions.

Since the holder for the block of wood does not per se constitute aportion of this invention and as the same is fully described in detailin said application for Letters Patent by said Vinton, it is thoughtimnecessary to describe in detail said block holder as any suitableblock holder may be employed in combination with a vertical electricmotor spindle without departing from the spirit of this invention, butsaid holder consists mosaic-i mainly of a support 5% for the block theblock being clamped in position upon said holder by a jaw 56 which ispivoted to a primary clamping lever 57, said primary clamping leverbeing actuated by rneans of a secondary clamping lever 58 to whichmotion is imparted by a lever 59 pivoted at 60 to th frame 61 of theblock holder. The frame 61 is pivoted at to a holder 63 which isfastened to a vertical rock sh ft 64. Said reel: shaft is rotatably andslidably mounted in bearings 65 and 66 carried upon a swinging; bracketor carrier 67 said swinging bracket being mounted upon a vertical shaft'58 to which it is clamped by ears and 70 and clamp screws 71 and T2respee tively. The ear 69 bears against the upper end or" a bearing 73for the shaft 68 mounted on the frame 15 oi: the machine The lower endof the shaft 68 is also suitably supported in a hearing. The lower endof the shaft 6411218 an arm We IdSi; thereto upon which is rotatablymounted a roller 75 which is adapted in the operation or". the machine,to bear against the upper ed gz c of i 'll-shaped cam track 76. Thiscani track is oivoted at its ends 77 to a bracket 78 on the frame and isadjusted to raise or lower the same more or less by means of anadjusting screw 79 which has screw-threaded engagement with the bracket78 and the upper end of which bears against the under side of said carntrack '2' 6.

The care track 76 and the bracket 78 are adjustable together as a Wholeby means of screws 80 and 81, see Fig. 1 which have screw-threadedengagement With lugs 82 and 83 upon the frame of the machine, the upperends of said screws bearing against depending slide members 84 and 85which adapted to slide upon the frame 15 of the machine and are guidedand clamped in position thereon by bolts 86 and 87 Which project throughslots 88 and 89 in said slide n inbers 84- and 85 and are fastened tothe arne of the machine.

Y means of the cam '76 a vertical motion .nparted to the block holderthrough the it A tipping motion is impared to the bloclr holder by aU-Sl'lfij-QGG. cain track 9) 4 inst the upper edge of which a roll 91mounted on the aclr "frame 61 bears during the operation of the machine.The earn trucl-c is pivoted its ends 92 to a bracket 9 and cain track 90is adjusted to ditpt cions vertically by means or an screw 9 Which hasscrew-threaded with the bracket 93 and the up of which bears against thelower the track 90. she bracket 93 together with the cam track 90 may beadjusted vertically by means of screws 95 which bear against dependingarms 96 on the bracket 93 and have screwthreuded engagement with ears 97on the ject through slots 99 in the depending arms 96. The height towhich the bracket 1 8 is adjusted together with the traci: 7C- isiudicated by means of an inde linger 100 fast to the t arne 15 and ascale 101 fast to the depending arm 85, While the adjustment of thebracket 93 and cam trac r 90 are indicated b an index finger 102 fast tothe frame or the machine and a scale 103 test to the depending arm 9".

i i. iornier 10 i is fastened the vertical shaft of t e block hoidcr andthis iornier is adapted to or gage, in the operation of the niachi e,either one of a pair of guides 105 or 106. These guides are duplicatesof each other and are slilably mounted upon the trains of the machine,bei adjusted thereon by means an adjust n screw 10? and clamped by meansof chain .g p screws 108 to the trains 15.

The general operation oi: the mechanism hcreinbefore specificallydescribed is a foiions. .the motors lo and 51 are thrown into operationby a convenient switch not 1 the drawings thus causing the and to rotatin the direcarrows a and 6 respectively.

1 is placed upon the supof wood port 5i: and the handle of the lever 59is then depressed causing the lever 58 and prin'iary clarnpinglever 57to move -i -Y v' it downwardly at their forward ends, thus causing thejaw 55 to be moved doWnWar' ly against the bio sir 55 to clamp itagainst oloc'n:

coincides with the longitupianc l3-l3, Fig. 5, of the coincides with thelongitupianc i kl: oi the swinging c the swinging bracket counter- *isethe block 55 being held in engage with 16 until the p-rts e in Fig. '7.nor 1% is held n l the frame 61 o 1 raised and lowered sl aft 6 arm i land track 1 upon its pivot 62 by means and earn-shaped track 90 in tieproper shaped cono the b r by means or tor the ieel o the shoe on oneside or" the heel train the breast to the middle of the hack thereof.The operator having finished one side of the heel now moves the parts tothe position illustrated in big 8, which is the same as the positionilus trated in llig. 5 and then moves the parts until their center linesA if, and 3-3 assume the relativ iioc'tioiu, Lac-.atrated in Fin. 9 andfinally to the position illustrated in Fig. 10, thus completing theshaping of the heel ot the shoe. 'l, 1 Ms are then i'lostral iid inmoved lJzu-l; to the position thus releaslf ig. 5 and the lever :39 israised ing the heel ol the shoe and allowing to be removed by the o;:rator tron; the block holder, In the tors are run at speed enables thecntte to and to produce smooth wow; i the rapidity with which the z theblank into the cutter. running inachii the prior necessary to read thehlanl: s cutter when breast where grain.

We claim:

1. A inai-nine for shaping wooden heels having, in combination, a?electric motor including. a rotary spindle, a cutter fast to saidspindle, a bracket pivoted to swing on the frame of said machine, aholder for a block adapted to slide vertically upon said swingingbracket and a cam on. sad frame adapted to impart a rcciprocatoryvertical motion to said hlocl: holder.

2. A, machine for slurping- .voodcn heels having, in combination, anelectric motor including a rotary spindle, a cutter fast to saidspindle, a bracket pivoted to swing on the frame of said machine, aholder for a block adapted to slide vertically upon said swingingbracket, a cam on said frame adapted to impart a reciprocatory verticalmotion to said block holder and means to raise and lower said cam.

3. A machine for shaping wooden heels having, in combination, anelectric motor including a rotary spindle, a cutter fast to saidspindle, a bracket pivoted to swing on the frame of said machine, avertical shaft slidably mounted on said swinging bracket, a horizontalpivotinovable wit,

said vertical shaft, block holder pivotaladantcd to former wher aidnoved to so position ely to said cutter that .pcd to form a wooden heel.

for shaping wooden heels pair of plectric eluding a rot spnid usingadapted lc rend in oppos te rnrections, 21 cm oi said smiles. alJETPJLfi F-JQ on frame of said inach'se, a

blo lc :ulapt d to .lally upon 'aclzet a cam on said a reciprocatory,n'aion to said block holder. i'siachin shaping wooden heels ination, apair electric wlndii a rotary spindle, a

it"er last to each c said spindles, said lies horns; adapts to rotate inopposite ct" re aly, bracket pivoted to swing on t 1e of said'machine, a

vertical shalt slidably mounted on said swinging bracket, a horizontalpivot mm abic with said vertical shaft, a block holder pivotallv mountedto rock on said pivot, means to in'ipart a vertical movement to saidshaft and means to rock said block holder upon its pivot.

8. A mac-hi for shaping wooden heels having, in combination, a pair ofelectric motors each including a vertical rotary spindle, said spindlesbeing; adapted to rotate respectively in opposite directions, a cutterfast to each of said spindles, a holder for a block, a bracl 'et mountedto upon the frame of said machine and upon which sa d block holder ispivotaily mounted, a former fast to said clock holder and stationaryguide acent to each of said spindies respectively, sail guides adaptedto he engaged alternately by said former, whereby said block holder mayhe moved to so position said block r latively to each of said cuttersthat it may be shaped to form a wooden heel.

9. A machine for shaping wooden heels having, in comhi scion, a frame,on electric motor including a rotary spindle mounted on said frame, acutter fast to said spindle, a brac 'et pivoted to swing; on said frame,a holder for a block adapted to slide vertically bracket, an auxil y eunted en sail;

d adap i to a recipreeaory verlii ction to said block us at. said cam onsaid and means to adjust said vertically trwse. efor shapii Woodsheels'on, a frame, an electric 'ctary spindle mounted test to the s; heel llock, a ca pivoted for movement to that of the spindle thereterespectively, ara heel block on the holder I l ion with the cutter Whilepermitting relative to-and-fro movement of the holder and cutter toshape the heel as the holder turns'abcut its said parallel pivotal axis,and a cam for tilting the holder about the said perpendicular pivotalaxis to govern the pitch of the heel being cut.

11. A machine for shaping Wooden heels having, in combination, a frame,an electric motor including a rotary spindle mounted on the frame, acutter fast to the spindle,

rel

In testin'ionv whereof We have hereunto set our hands in presence of twosubscribing witnesses.

ARTHUR E. FOLSOM. JOHN H. VINTON. WILIJMLM M. WHITNEY.

Witnesses:

FRANKLIN E. Low, CHARLES S. GoomNe.

